Flush valve



D. LANDRO FLUSH VALVE Filed May 18 1922 j WM Zandro Patented Aug. 5 1924UNITED STATES DOMINIC LANDRO, 0F HAZLETON, PENNSYLVANIA.

FLUSH VALVE.

Application filed May 18, 1922. Serial No. 561,942.

To all whom it may concern:

Be it known that I, DOMINIG LANDRO, a citizen of the United States,residing at Hazleton, in the county of Luzerne and State ofPennsylvania, have invented certain new and useful Improvements in FlushValves, of which the following is a specification.

This invention relates to the outlet valves of flushing tanks and hasfor its object the provision of an inexpensive construction wherebyproper seating of the valve will be effected and the life of the valveprolonged. Valves of the class to which my invention relates are nowalmost universally in the form of a hollow rubber ball which is carriedby a stem guided in a suitable bracket secured upon the overflow pipe ofthe tank. After a valve has been in use for a prolonged period. it isapt to become water-logged and swell so that it touches the overflowpipe and is, therefore, prevented from properly seating to close theoutlet pipe, the result being that frequently the water will run for along period with an attendant noise which is irritating to the occupantsof the house. My invention seeks primarily to provide means whereby thisimperfect seating of the valve and the consequent frequent attentionthere to which is necessary will be overcome. The invention isillustrated in the accompany ing drawings and will be hereinafter fullyset forth.

In the drawings Figure l'is a side elevation of a flush valve seated toclose the outlet pipe of the tank and showing it in proper relation tothe over- Fig. 2 is an enlarged section of the valve.

In the drawings, the reference numeral 1 indicates the usual outlet orflushing pipe having a seat 2 at its upper end to receive the valve 3.Communicating with the flush pipe below the seat 2 is an overflow pipe 4which rises within the tank to a point near the top of the same and isof a we1l-known construction. Secured to the overflow pipe and extendinglaterally therefrom is a guide 5 in which the stem 6 of the flush valveplays. The valve 3 is a hollow rubber ball and may be provided with anopening 7 in its lower side as is now the general practice, and it isalso provided at its top with a depending internally threaded socket orthimble 8. In carrying out my invention, I provide a metallic cap 9which encloses the upper portion of the valve. As shown in the drawings,this cap 9 is of conical form, it being somewhat truncated at its upperend, as shown, to fit closely over the upper end of the socket and theball, and being formed with an opening therethrough to accommodate thestem 6. A. look nut 11 is fitted upon the threads 10 of the stemimmediately over the truncated upper end of the cap so as to firmlysecure the cap in place. The cap is provided with a rim 12 at its lowerend and this rim converges slightly toward its lower edge whereby itwill conform to the lower hemisphere of the valve and will fit closelyto the same. teriorly upon the lower edge of the cap so as to preventcutting of the valve and reinforce the rim so as to counteract anytendency of the same to'buckle.

The cap should be of such dimensions that it will enclose the upper halfof the valve,

and the rim l2 depends slightly below the horizontal diameter of thevalve and thereby tends to hold the valve in a partly compressed stateand will neutralize any tendency of the valve to expand as it may becomewater-logged. It will be readily noted by referring to Fig. 1 that therim 12 and bead or rib 13 will be the parts which impinge upon theoverflow pipe should the stem 6 fail to maintain the valve in arectilinearpath during its operation, but inasmuch as the metal does nothave the'same adhesive qualities that rubber possesses, there will notbe that tendency of the valve to stick and improperly seat which is nownoticeable in the use of the ordinary rubber valve. My device isexceedingly simple and inexpensive and may be readily applied to anyball valves now in use.

Having thus described the invention, what is claimed as new is:

1. A flush valve comprising a normally spherical elastic ball, ametallic cap of conical form bearing against and compressing the upperportion of the ball, and means for drawing the upper portion of the ballwithin the cap to cause it to assume the conical form of the cap, saidcap having its lower edge extended slightly below the horizontaldiameter of the ball and conforming to the spherical wall thereof toretain the ball within the cap.

2. A flush valve comprising a normally spherical elastic ball, aone-piece metallic cap of conical form bearing against and compressingthe upper half of the ball, and

A rib or bead 13 is formed exiii means for drawing the upper half of theball within the cap to cause it to assume the conical form of the cap,said cap having its lower edge extended slightly below the horizontaldiameter of the ball and provided with a terminal reinforcing bead theextended lower edge of the cap at said reinforcing bead conforming tothe spherical Wall of the ball whereby to retain the ball within thecap.

3. A flush valve comprising normally spherical elastic ball, a one-piecemetallic cap of conical t'orin bearing against and compressing the upperhalf of the ball to cause it to assume the conical form of the cap, thecentral portion of the cap being flat and provided with an opening, athreaded socket member arranged Within the cap and bearing againsttheupper. portion of the ball, a stem extending through the opening in thecap and engaging the threads in the socket, a nut threaded 0n the stemand bearing against the cap for clamping the cap and the upper portionof the ball in contact with each other, the lower edge of the cap beingextended slightly below the horizontal diameter of the ball and providedwith a terminal reinforcing head, said le-Wer edge of the cap conformingto the spherical wall of the lower half of the ball whereby to retainthe ball within the cap.

In testimony whereof I afiix my signature.

DOMINIO LANDno. 11. 8.

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